As a follow-up, I found a clip of todays performance on YouTube (already!). Chloe sings first - of course! - and she exchanges a few words with the host during the post-performance interview. Her sweet voice matcher her soft beauty. I will try to embed the video here:

I still prefer her in white, since in the images at the beginning of this thread, she looks like a dream-bride - like everyones innermost vision of what the ideal bride should look like. But her dress in this new clip, with the deep decolletage, is gorgeous as well.